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69 lines
2 KiB
Text
69 lines
2 KiB
Text
DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN> GENERATED ALWAYS AS (a+1)) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) # #
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b int(11) # # VIRTUAL
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INSERT INTO t1 (a) VALUES (1),(2);
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INSERT INTO t1 (a,b) VALUES (3,3),(4,4);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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SELECT * FROM t1;
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a b
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1 2
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2 3
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3 4
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4 5
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN> GENERATED ALWAYS AS (a+1) PERSISTENT) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) # #
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b int(11) # # PERSISTENT
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INSERT INTO t1 (a) VALUES (1),(2);
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INSERT INTO t1 (a,b) VALUES (3,3),(4,4);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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SELECT * FROM t1;
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a b
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1 2
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2 3
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3 4
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4 5
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN> GENERATED ALWAYS AS (a+1) VIRTUAL) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) # #
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b int(11) # # VIRTUAL
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INSERT INTO t1 (a) VALUES (1),(2);
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INSERT INTO t1 (a,b) VALUES (3,3),(4,4);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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SELECT * FROM t1;
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a b
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1 2
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2 3
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3 4
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4 5
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DROP TABLE t1;
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CREATE TABLE t1 (a <INT_COLUMN>, b <INT_COLUMN> AS (a+1) PERSISTENT) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
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SHOW COLUMNS IN t1;
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Field Type Null Key Default Extra
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a int(11) # #
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b int(11) # # PERSISTENT
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INSERT INTO t1 (a) VALUES (1),(2);
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INSERT INTO t1 (a,b) VALUES (3,3),(4,4);
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Warnings:
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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Warning 1906 The value specified for computed column 'b' in table 't1' ignored
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SELECT * FROM t1;
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a b
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1 2
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2 3
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3 4
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4 5
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DROP TABLE t1;
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